CN112471331A - Additive-free livestock and poultry feed and processing method thereof - Google Patents
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- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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- A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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- A23K10/00—Animal feeding-stuffs
- A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
- A23K10/37—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms from waste material
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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- A23K40/00—Shaping or working-up of animal feeding-stuffs
- A23K40/10—Shaping or working-up of animal feeding-stuffs by agglomeration; by granulation, e.g. making powders
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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- A23K50/70—Feeding-stuffs specially adapted for particular animals for birds
- A23K50/75—Feeding-stuffs specially adapted for particular animals for birds for poultry
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
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Abstract
The invention discloses an additive-free livestock and poultry feed and a processing method thereof, and the formula comprises the following components: the composite fertilizer comprises plant straws, grain grains, cake meal, rice bran powder, high gluten flour, wheat bran, aquatic plants and salt, wherein the components in parts by weight are as follows: 5-10 parts of plant straws, 10-15 parts of corn kernels, 10-15 parts of bean pulp, 5-10 parts of rice bran powder, 2-3 parts of strong flour, 5-10 parts of wheat bran, 10-15 parts of aquatic plants and 2-3 parts of salt; the feed has the advantages that the additive is not added in the formula, the condition that a large amount of edible additives of livestock and poultry harm the health of the livestock and poultry is avoided, meanwhile, the aquatic plants and the plant straws are added in the formula and are cleaned, the reduction of the impurity content in the feed is facilitated, meanwhile, the requirements of the livestock and poultry on different nutritional ingredients are facilitated, meanwhile, the high-gluten flour is added in the processing process, the processing and granulating difficulty is reduced by utilizing the viscosity of the high-gluten flour, and meanwhile, the phenomenon of feed crushing in the feeding process is avoided.
Description
Technical Field
The invention relates to the technical field of feeds, in particular to an additive-free livestock feed and a processing method thereof.
Background
The feed is a general term of food of animals raised by all people, a common feed in a narrower sense mainly refers to food of animals raised in agriculture or animal husbandry, wherein a large amount of additives are usually added and mixed in the feed in the processing process of the traditional livestock feed, when the livestock and poultry uses the additives in a large amount, the health of the livestock and poultry is not facilitated, the feed added with the additives is single in nutrient content and not beneficial to meeting the requirements of the livestock and poultry on different nutrient contents, and meanwhile, in the preparation and granulation process, the granulation difficulty is high, and meanwhile, in the subsequent feeding process, the feed is easy to crush and not beneficial to feeding.
Disclosure of Invention
The invention aims to provide an additive-free livestock and poultry feed and a processing method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: an additive-free livestock and poultry feed comprises the following formula: the composite fertilizer comprises plant straws, grain grains, cake meal, rice bran powder, high gluten flour, wheat bran, aquatic plants and salt, wherein the components in parts by weight are as follows: 5-10 parts of plant straw, 10-15 parts of corn kernels, 10-15 parts of soybean meal, 5-10 parts of rice bran powder, 2-3 parts of strong flour, 5-10 parts of wheat bran, 10-15 parts of aquatic plants and 2-3 parts of salt.
A processing method of additive-free livestock and poultry feed comprises the following steps of firstly, weighing raw materials; step two, washing and drying; step three, drying and mixing; step four, stirring treatment; step five, granulating and cooling;
in the first step, 5-10 parts of plant straws, 10-15 parts of grain particles, 10-15 parts of bean pulp, 5-10 parts of rice bran powder, 2-3 parts of strong flour, 5-10 parts of wheat bran, 10-15 parts of aquatic plants and 2-3 parts of salt are respectively weighed according to the parts by weight of the components;
in the second step, firstly washing the grain particles weighed in the first step by using clean water, then carrying out draining treatment on the washed grain particles for 10-15min, then placing the grain particles subjected to draining treatment in a drying room for drying treatment, wherein the temperature in the drying room is 70-80 ℃, and the drying time is 20-30min, then placing the dried grain particles and the bean pulp weighed in the first step together in a crusher for crushing treatment, and then screening by using a 16-18-mesh screen to obtain powder particles for later use;
in the third step, the plant straws weighed in the first step are placed in a drying room for drying treatment, then the aquatic plants weighed in the first step are placed in clear water for rinsing for 2-3 times, then the rinsed aquatic plants are subjected to draining for 1-2h, then the drained aquatic plants are subjected to drying treatment, the drying temperature is 40-45 ℃, the drying time is 2-3h, then the dried aquatic plants and the plant straws are crushed by a crusher, and then the crushed plant straws and the crushed aquatic plants are placed in a stirrer for stirring and mixing to obtain a mixture for later use;
in the fourth step, the rice bran powder, the wheat bran and the salt weighed in the first step are placed in a stirrer together for stirring treatment, then the powder particles obtained in the second step are placed in the stirrer filled with the rice bran powder, the wheat bran and the salt for stirring to obtain a powder mixture, the stirring time is 50-60min, and the stirring speed is 500-1000 r/min;
and in the fifth step, the powder mixture obtained in the fourth step and the mixture obtained in the third step are placed in a granulator together for granulation treatment and then cooled to prepare the required livestock and poultry feed.
According to the technical scheme, the plant straw is one or a mixture of more of fresh corn straw, fresh wheat straw and fresh soybean straw.
According to the technical scheme, the grain grains are prepared by mixing corn grains, barley grains, wheat grains, sorghum, broad beans and peas.
According to the technical scheme, the cake meal is prepared by mixing a rapeseed cake, a peanut cake, a soybean cake and a sesame cake.
According to the technical scheme, the aquatic plant is prepared by mixing water hyacinth and duckweed.
According to the technical scheme, in the third step, the temperature in the drying room is 40-50 ℃, and the drying time is 4-6 h.
According to the technical scheme, in the third step, the time is 20-30min, and the stirring speed is 500-1000 r/min.
According to the technical scheme, in the fifth step, the granulation temperature is 70-80 ℃, and the steam pressure during granulation is 0.4-0.6 MPa.
Compared with the prior art, the invention has the following beneficial effects: the livestock and poultry feed is not added with additives in the formula, so that the harm of a large amount of edible additives to the health of livestock and poultry is avoided; meanwhile, in the process of preparing the feed, the added aquatic plants and plant straws are cleaned, so that the impurity content in the feed is favorably reduced, the nutritional ingredients of the feed are increased, and the requirements of livestock and poultry on different nutritional ingredients are favorably met; meanwhile, the high gluten flour is added in the processing process, and then granulation treatment is carried out, so that the processing and granulation difficulty is reduced by using the viscosity of the high gluten flour, the phenomenon of feed crushing in the feeding process is avoided, the quality of the feed is improved, and meanwhile, the feed is beneficial to feeding livestock and poultry.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
example 1:
an additive-free livestock and poultry feed comprises the following formula: the composite fertilizer comprises plant straws, grain grains, cake meal, rice bran powder, high gluten flour, wheat bran, aquatic plants and salt, wherein the components in parts by weight are as follows: 5-10 parts of plant straws, 10-15 parts of corn kernels, 10-15 parts of bean pulp, 5-10 parts of rice bran powder, 2-3 parts of strong flour, 5-10 parts of wheat bran, 10-15 parts of aquatic plants and 2-3 parts of salt; the plant straw is one or a mixture of fresh corn straw, fresh wheat straw and fresh soybean straw, the grain grains are prepared by mixing corn kernels, barley grains, wheat grains, sorghum, broad beans and peas, the cake meal is prepared by mixing rape seed cakes, peanut cakes, soybean cakes and sesame cakes, and the aquatic plant is prepared by mixing water hyacinth and duckweed.
A processing method of additive-free livestock and poultry feed comprises the following steps of firstly, weighing raw materials; step two, washing and drying; step three, drying and mixing; step four, stirring treatment; step five, granulating and cooling;
in the first step, 5 parts of plant straws, 10 parts of grain granules, 10 parts of bean pulp, 5 parts of rice bran powder, 2 parts of strong flour, 5 parts of wheat bran, 10 parts of aquatic plants and 2 parts of salt are weighed according to the parts by weight of the components;
in the second step, firstly washing the grain particles weighed in the first step by using clean water, then carrying out draining treatment on the washed grain particles for 10-15min, then placing the grain particles subjected to draining treatment in a drying room for drying treatment, wherein the temperature in the drying room is 70-80 ℃, and the drying time is 20-30min, then placing the dried grain particles and the bean pulp weighed in the first step together in a crusher for crushing treatment, and then screening by using a 16-18-mesh screen to obtain powder particles for later use;
wherein in the third step, the plant straws weighed in the first step are placed in a drying room for drying treatment, the temperature in the drying room is 40-50 ℃, the drying time is 4-6h, then the aquatic plants weighed in the step one are placed in clean water to be frequently rinsed for 2-3 times, then the rinsed aquatic plants are drained for 1-2h, then the drained aquatic plants are dried, the drying temperature is 40-45 ℃, the drying time is 2-3h, then the dried aquatic plants and plant straws are crushed by a crusher, then placing the crushed plant straws and the crushed aquatic plants in a stirrer to stir and mix to obtain a mixture for later use, the mixing time is 20-30min, and the stirring speed is 500-;
in the fourth step, the rice bran powder, the wheat bran and the salt weighed in the first step are placed in a stirrer together for stirring treatment, then the powder particles obtained in the second step are placed in the stirrer filled with the rice bran powder, the wheat bran and the salt for stirring to obtain a powder mixture, the stirring time is 50-60min, and the stirring speed is 500-1000 r/min;
in the fifth step, the powder mixture obtained in the fourth step and the mixture obtained in the third step are placed in a granulator together for granulation treatment and then cooled to prepare the required livestock and poultry feed, wherein the granulation temperature is 70-80 ℃, and the steam pressure during granulation is 0.4-0.6 MPa.
Example 2:
an additive-free livestock and poultry feed comprises the following formula: the composite fertilizer comprises plant straws, grain grains, cake meal, rice bran powder, high gluten flour, wheat bran, aquatic plants and salt, wherein the components in parts by weight are as follows: 5-10 parts of plant straws, 10-15 parts of corn kernels, 10-15 parts of bean pulp, 5-10 parts of rice bran powder, 2-3 parts of strong flour, 5-10 parts of wheat bran, 10-15 parts of aquatic plants and 2-3 parts of salt; the plant straw is one or a mixture of fresh corn straw, fresh wheat straw and fresh soybean straw, the grain grains are prepared by mixing corn kernels, barley grains, wheat grains, sorghum, broad beans and peas, the cake meal is prepared by mixing rape seed cakes, peanut cakes, soybean cakes and sesame cakes, and the aquatic plant is prepared by mixing water hyacinth and duckweed.
A processing method of additive-free livestock and poultry feed comprises the following steps of firstly, weighing raw materials; step two, washing and drying; step three, drying and mixing; step four, stirring treatment; step five, granulating and cooling;
in the first step, respectively weighing 10 parts of plant straws, 15 parts of grain granules, 15 parts of bean pulp, 10 parts of rice bran powder, 3 parts of strong flour, 10 parts of wheat bran, 15 parts of aquatic plants and 3 parts of salt according to the parts by weight of the components;
in the second step, firstly washing the grain particles weighed in the first step by using clean water, then carrying out draining treatment on the washed grain particles for 10-15min, then placing the grain particles subjected to draining treatment in a drying room for drying treatment, wherein the temperature in the drying room is 70-80 ℃, and the drying time is 20-30min, then placing the dried grain particles and the bean pulp weighed in the first step together in a crusher for crushing treatment, and then screening by using a 16-18-mesh screen to obtain powder particles for later use;
wherein in the third step, the plant straws weighed in the first step are placed in a drying room for drying treatment, the temperature in the drying room is 40-50 ℃, the drying time is 4-6h, then the aquatic plants weighed in the step one are placed in clean water to be frequently rinsed for 2-3 times, then the rinsed aquatic plants are drained for 1-2h, then the drained aquatic plants are dried, the drying temperature is 40-45 ℃, the drying time is 2-3h, then the dried aquatic plants and plant straws are crushed by a crusher, then placing the crushed plant straws and the crushed aquatic plants in a stirrer to stir and mix to obtain a mixture for later use, the mixing time is 20-30min, and the stirring speed is 500-;
in the fourth step, the rice bran powder, the wheat bran and the salt weighed in the first step are placed in a stirrer together for stirring treatment, then the powder particles obtained in the second step are placed in the stirrer filled with the rice bran powder, the wheat bran and the salt for stirring to obtain a powder mixture, the stirring time is 50-60min, and the stirring speed is 500-1000 r/min;
in the fifth step, the powder mixture obtained in the fourth step and the mixture obtained in the third step are placed in a granulator together for granulation treatment and then cooled to prepare the required livestock and poultry feed, wherein the granulation temperature is 70-80 ℃, and the steam pressure during granulation is 0.4-0.6 MPa.
Example 3:
an additive-free livestock and poultry feed comprises the following formula: the composite fertilizer comprises plant straws, grain grains, cake meal, rice bran powder, high gluten flour, wheat bran, aquatic plants and salt, wherein the components in parts by weight are as follows: 5-10 parts of plant straws, 10-15 parts of corn kernels, 10-15 parts of bean pulp, 5-10 parts of rice bran powder, 2-3 parts of strong flour, 5-10 parts of wheat bran, 10-15 parts of aquatic plants and 2-3 parts of salt; the plant straw is one or a mixture of fresh corn straw, fresh wheat straw and fresh soybean straw, the grain grains are prepared by mixing corn kernels, barley grains, wheat grains, sorghum, broad beans and peas, the cake meal is prepared by mixing rape seed cakes, peanut cakes, soybean cakes and sesame cakes, and the aquatic plant is prepared by mixing water hyacinth and duckweed.
A processing method of additive-free livestock and poultry feed comprises the following steps of firstly, weighing raw materials; step two, washing and drying; step three, drying and mixing; step four, stirring treatment; step five, granulating and cooling;
in the first step, respectively weighing 8 parts of plant straws, 14 parts of grain granules, 13 parts of bean pulp, 7 parts of rice bran powder, 2 parts of strong flour, 9 parts of wheat bran, 12 parts of aquatic plants and 2 parts of salt according to the parts by weight of the components;
in the second step, firstly washing the grain particles weighed in the first step by using clean water, then carrying out draining treatment on the washed grain particles for 10-15min, then placing the grain particles subjected to draining treatment in a drying room for drying treatment, wherein the temperature in the drying room is 70-80 ℃, and the drying time is 20-30min, then placing the dried grain particles and the bean pulp weighed in the first step together in a crusher for crushing treatment, and then screening by using a 16-18-mesh screen to obtain powder particles for later use;
wherein in the third step, the plant straws weighed in the first step are placed in a drying room for drying treatment, the temperature in the drying room is 40-50 ℃, the drying time is 4-6h, then the aquatic plants weighed in the step one are placed in clean water to be frequently rinsed for 2-3 times, then the rinsed aquatic plants are drained for 1-2h, then the drained aquatic plants are dried, the drying temperature is 40-45 ℃, the drying time is 2-3h, then the dried aquatic plants and plant straws are crushed by a crusher, then placing the crushed plant straws and the crushed aquatic plants in a stirrer to stir and mix to obtain a mixture for later use, the mixing time is 20-30min, and the stirring speed is 500-;
in the fourth step, the rice bran powder, the wheat bran and the salt weighed in the first step are placed in a stirrer together for stirring treatment, then the powder particles obtained in the second step are placed in the stirrer filled with the rice bran powder, the wheat bran and the salt for stirring to obtain a powder mixture, the stirring time is 50-60min, and the stirring speed is 500-1000 r/min;
in the fifth step, the powder mixture obtained in the fourth step and the mixture obtained in the third step are placed in a granulator together for granulation treatment and then cooled to prepare the required feed, wherein the granulation temperature is 70-80 ℃, and the steam pressure during granulation is 0.4-0.6 MPa.
The livestock and poultry feed obtained in the above embodiment is respectively fed to the same group of chickens with the same body size and the same quantity for 15 days, and the obtained data are as follows:
| average growth rate | |
| Example 1 | 45g/d |
| Example 2 | 50g/d |
| Example 3 | 48g/d |
Based on the above, the invention has the advantages that the plant straws and the aquatic plants are cleaned in the process of preparing the feed, and then the feed is prepared, so that the content of impurities in the feed is reduced, meanwhile, the nutritional composition in the feed is improved by utilizing the added plant straws and the added aquatic plants, the requirements of livestock and poultry on different nutrients are met, in addition, in the formula, no additive is added, the condition that the health of the livestock and poultry is harmed by a large amount of additives is avoided, meanwhile, in the process of preparing the granules, the difficulty degree of the granules is reduced by utilizing the viscosity of the high gluten flour, the phenomenon that the feed is crushed in the subsequent feeding process is avoided, the quality of the feed is improved, and meanwhile, the feed is beneficial for feeding the livestock and poultry.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An additive-free livestock and poultry feed comprises the following formula: plant straw, grain, cake, rice bran powder, high gluten flour, wheat bran, aquatic plant and salt, and is characterized in that: the weight parts of the components are respectively as follows: 5-10 parts of plant straw, 10-15 parts of corn kernels, 10-15 parts of soybean meal, 5-10 parts of rice bran powder, 2-3 parts of strong flour, 5-10 parts of wheat bran, 10-15 parts of aquatic plants and 2-3 parts of salt.
2. A processing method of additive-free livestock and poultry feed comprises the following steps of firstly, weighing raw materials; step two, washing and drying; step three, drying and mixing; step four, stirring treatment; step five, granulating and cooling; the method is characterized in that:
in the first step, 5-10 parts of plant straws, 10-15 parts of grain particles, 10-15 parts of bean pulp, 5-10 parts of rice bran powder, 2-3 parts of strong flour, 5-10 parts of wheat bran, 10-15 parts of aquatic plants and 2-3 parts of salt are respectively weighed according to the parts by weight of the components;
in the second step, firstly washing the grain particles weighed in the first step by using clean water, then carrying out draining treatment on the washed grain particles for 10-15min, then placing the grain particles subjected to draining treatment in a drying room for drying treatment, wherein the temperature in the drying room is 70-80 ℃, and the drying time is 20-30min, then placing the dried grain particles and the bean pulp weighed in the first step together in a crusher for crushing treatment, and then screening by using a 16-18-mesh screen to obtain powder particles for later use;
in the third step, the plant straws weighed in the first step are placed in a drying room for drying treatment, then the aquatic plants weighed in the first step are placed in clear water for rinsing for 2-3 times, then the rinsed aquatic plants are subjected to draining for 1-2h, then the drained aquatic plants are subjected to drying treatment, the drying temperature is 40-45 ℃, the drying time is 2-3h, then the dried aquatic plants and the plant straws are crushed by a crusher, and then the crushed plant straws and the crushed aquatic plants are placed in a stirrer for stirring and mixing to obtain a mixture for later use;
in the fourth step, the rice bran powder, the wheat bran and the salt weighed in the first step are placed in a stirrer together for stirring treatment, then the powder particles obtained in the second step are placed in the stirrer filled with the rice bran powder, the wheat bran and the salt for stirring to obtain a powder mixture, the stirring time is 50-60min, and the stirring speed is 500-1000 r/min;
and in the fifth step, the powder mixture obtained in the fourth step and the mixture obtained in the third step are placed in a granulator together for granulation treatment and then cooled to prepare the required livestock and poultry feed.
3. The additive-free livestock and poultry feed according to claim 1, characterized in that: the plant straw is one or a mixture of more of fresh corn straw, fresh wheat straw and fresh soybean straw.
4. The additive-free livestock and poultry feed according to claim 1, characterized in that: the grain grains are prepared by mixing corn grains, barley grains, wheat grains, sorghum, broad beans and peas.
5. The additive-free livestock and poultry feed according to claim 1, characterized in that: the cake meal is prepared by mixing rapeseed cake, peanut cake, soybean cake and sesame cake.
6. The additive-free livestock and poultry feed according to claim 1, characterized in that: the aquatic plant is prepared by mixing water hyacinth and duckweed.
7. The processing method of the additive-free livestock feed according to claim 2, characterized in that: in the third step, the temperature in the drying room is 40-50 ℃, and the drying time is 4-6 h.
8. The processing method of the additive-free livestock feed according to claim 2, characterized in that: in the third step, the time is 20-30min, and the stirring speed is 500-1000 r/min.
9. The processing method of the additive-free livestock feed according to claim 2, characterized in that: in the fifth step, the granulation temperature is 70-80 ℃, and the steam pressure during granulation is 0.4-0.6 MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011352791.6A CN112471331A (en) | 2020-11-26 | 2020-11-26 | Additive-free livestock and poultry feed and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011352791.6A CN112471331A (en) | 2020-11-26 | 2020-11-26 | Additive-free livestock and poultry feed and processing method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107873992A (en) * | 2017-12-29 | 2018-04-06 | 重庆骏港生态农业有限公司 | A kind of mixed fodder formula of fragrant pig |
| CN108935965A (en) * | 2018-07-16 | 2018-12-07 | 合肥康青源养殖有限公司 | A kind of animal-breeding special feed and preparation method thereof |
| CN110742206A (en) * | 2019-11-20 | 2020-02-04 | 忠县美健达食品有限公司 | Nutritional feed for breeding and growing of small fragrant pigs and preparation method thereof |
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2020
- 2020-11-26 CN CN202011352791.6A patent/CN112471331A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107873992A (en) * | 2017-12-29 | 2018-04-06 | 重庆骏港生态农业有限公司 | A kind of mixed fodder formula of fragrant pig |
| CN108935965A (en) * | 2018-07-16 | 2018-12-07 | 合肥康青源养殖有限公司 | A kind of animal-breeding special feed and preparation method thereof |
| CN110742206A (en) * | 2019-11-20 | 2020-02-04 | 忠县美健达食品有限公司 | Nutritional feed for breeding and growing of small fragrant pigs and preparation method thereof |
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